The Oxford cloth button-down shirt is a quintessential wardrobe staple and a hallmark of old-school collegiate style. It's beloved for its easy versatility: it can dress up chinos or make a suit feel more relaxed. J Crew's oxford is made from American Pima cotton, a species that has longer fibers than other varieties of cotton which makes it stronger, softer and less likely to pill. As an added bonus, it's engineered with mechanical stretch: the 100% cotton fabric is woven loosely, then washed, giving it natural elasticity without having any stretch fibers. J Crew kept the collar unlined and a little on the long side, a nod to its Ivy League heritage. (Fun fact: Yale, Harvard and Cambridge also had shirt fabrics named after them, but none have stood the test of time as well as Oxford's.)